FINAL PRESENTATION University of Cincinnati TEAM ADVISOR: Muthar - PowerPoint PPT Presentation

FINAL PRESENTATION University of Cincinnati TEAM ADVISOR: Muthar Al-Ubaidi 4/11/2018

Agenda (1 of 2) Informational Only • Team Introductions (include photo) • Problem Statement & Objectives • Summary of Midway presentation – Note: Do not spend too much time on this section – Design objectives – Vehicle design – Fluid power circuit design – Selection of hardware – Results and incorporation of analyses (e.g., finite element analysis)

Agenda (2 of 2) Informational Only • Vehicle construction – Succinct and well organized • Vehicle testing – Was performed and improvements were made based on results • Final vehicle brought to the competition – Appears reliable, safe and of quality craftsmanship • Lessons learned – Are clearly stated and appropriate to the design/build experience described • Presentation – Completed on time and demonstrates good team synergy

University of Cincinnati Team

Team Members • Mateo Oquendo-Chandler- Communication, Braking System • Chelsie King- Documentation, Braking System • Daniel Luken- 3D Modeling, Machining, Fabrication Design • Evangelos Stathis- 3D Modeling, Machining, Fab Design • Brandon Kohli- Hydraulic Loop Design • Jon Von Hoene- Component Selection/Hydraulic System • Muthar Al-Ubaidi- Team Advisor

DESIGN OBJECTIVES

Challenge Expectations • Three Main Challenges – Sprint Race • 600 ft course • Score based on best time – Efficiency Challenge • Minimum distance of 100 ft • Score based on ratio of the weight of the rider (lb) and distance traveled (in) divided by the gas pre-charge pressure (PSI) and gas volume of storage device (in 3 ). – Endurance Challenge • Couse done in slalom fashion and total no more than 1 mile. • Score based on best time with a maximum of 30 minutes.

Our Expectations • Finished product under 150 lbs. • Maintain the structural integrity of the original bike – Keep everything tight and streamline • Easy maintenance and repair • Safety during construction as well as opperration

VEHICLE DESIGN

Frame Stress Analysis

Frame Design • Pump Bracket • Reservoir • Motor Bracket • Pedal Shaft

FLUID POWER CIRCUIT DESIGN

Hydraulic System- Direct Drive

Hydraulic System- Accumulator Charging

Hydraulic System- Launching

Hydraulic System- Regenerative Braking

Key Components • Accumulator • Gear Pump • Gear Motor • 4-way valve • 3-way valve • 2-way valve • Relief valve • Check valve

Vehicle Construction

Fabrication and Machining

Completed Vehicle • Boring • Turning • MIG Welding • Stick Welding • Drilling

VEHICLE TESTING

Testing Issues • Pump Orientation – Had to pedal backwards to drive wheel forward – Switched pump to other side • Broken Gear Teeth – Gear slipped and broke teeth (cast iron) – Ordered and installed new hardened steel gear

Lessons Learned • Dan Luken • Mateo Oquendo-Chandler • Jon Von Hoene • Brandon Kohli • Evan Stathis • Chelsie King

THANK YOU! QUESTIONS?